In addition to the common options, the following glyph-specific options are recognized:

Option Description Default
------ ----------- -------
-shape_size The size of the shape 10
on both ends.
-end_shape One of 'square', 'diamond', square
'tree', 'clover', 'star',
'bubble', 'arrow', 'wave'
-bubble_text The text to show in the bubble Text
if the bubble option is chosen
above (shape_size is then ignored)
-antiparallel Whether the right arrow 0
is reversed
-arc Whether the shapes are 0
connected by an arc
(a straight line is the default).